Definition of mysis
1 capitalized : the type genus of the family Mysidae
2 or mysis stage plural -es : a larva of higher crustaceans (as macrurans and peneids) having all the thoracic appendages biramous
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Origin and Etymology of mysis
New Latin, from Greek mysis action of closing (used of the lips or eyes), from myein to close (used of the lips or eyes), close the eyes + -sis — more at mystery
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